1 files changed, 13 insertions, 1 deletions
diff --git a/vm.h b/vm.h
index c75df82..74fe506 100644
--- a/vm.h
+++ b/vm.h
@@ -10,12 +10,21 @@ typedef struct _thread Thread;
 #include "val.h"
 #include "com.h"
 
-#define STACKSIZE 128
+typedef struct {
+	size_t ip;
+	Chunk *ch;
+
+} StackFrame;
+
+#define MAXDEPTH  64
+#define STACKSIZE 256*MAXDEPTH
 typedef struct _thread {
 	Chunk *ch;
 	size_t ip;
 	Val stack[STACKSIZE];
 	size_t sp;
+	StackFrame rstack[MAXDEPTH];
+	size_t rsp;
 } Thread;
 Thread thread_new(State *S);
 
@@ -34,6 +43,7 @@ typedef enum {
 	OP_EQU,
 	OP_CMP,
 
+	OP_HALT,
 
 	OP_DROP,
 
@@ -47,6 +57,8 @@ typedef enum {
 	OP_0BRANCH,
 	OP_SKIP,
 	OP_REDO,
+
+	OP_CALL,
 } Op;
 
 int runvm(State *S);